Dearomative [2 + 2] Cycloaddition and Formal C–H Insertion Reaction of<i>o</i>-Carboryne with Indoles: Synthesis of Carborane-Functionalized Heterocycles
作者:Da Zhao、Jiji Zhang、Zuowei Xie
DOI:10.1021/jacs.5b05426
日期:2015.7.29
e) is a very useful synthon for the synthesis of a variety of carborane-functionalized heterocycles. Reaction of o-carboryne with N-protected indoles gave carborane-fused indolines if the protecting group was TMS via dearomative [2 + 2] cycloaddition or carboranyl indoles for N-alkyl ones through formal C-H insertion reaction. For N-aryl indoles, both reactions were observed, giving two products, in